CN1685208A - Reference leakage device for leak snifter detector - Google Patents
Reference leakage device for leak snifter detector Download PDFInfo
- Publication number
- CN1685208A CN1685208A CNA038226375A CN03822637A CN1685208A CN 1685208 A CN1685208 A CN 1685208A CN A038226375 A CNA038226375 A CN A038226375A CN 03822637 A CN03822637 A CN 03822637A CN 1685208 A CN1685208 A CN 1685208A
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- CN
- China
- Prior art keywords
- housing
- lid
- pressure vessel
- described device
- leakage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/207—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material calibration arrangements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Leak detection arrangement (14) for a sniff tester (1) with a sniff probe (8) and a control unit (6). The leak detection arrangement is equipped with a gas reservoir (31) and a bottle neck (33) from which during a calibration a defined test gas rate is output. A sensor (42) in the bottle neck detects the proximity of the sniff probe and transmits a corresponding signal to the control unit (6) of the leak tester.
Description
The present invention relates to a kind of test reference leakage device of feature of the preamble with claim 1.
In industry and research, high request about its sealing has been proposed for many devices and product.Adopt which kind of leakage detection method or use which kind of leakage detector to depend on leakage way, slip or leakage rate.
Usually use the automatic deflation Leak Detection in trier of in cooling medium, automobile or other industry, making or the parts.Its prerequisite is to be provided with the test gas that preferably is in excessive rolling at trier or in parts.Usually helium is used as test gas, it was imported wherein before closing the cavity of leakage to be detected.Known also the employing just was in the interior gas of trier or parts originally as test gas, for example SF6 in the cooling medium industry or halogen family gas.
The trier of leakage to be detected is sampled by means of an inspiratory point (tip) that detects spray gun, and it absorbs the test gas that flows out because of the leakage that may exist and sends a test gas detector to.This detector can be in other parts in the device, wherein detects spray gun and is connected with this detector via a flexible pipe.If detector is enough little (for example infrared ray gas analyzer), it also can be packed in the spray gun itself, has therefore shortened the reaction time greatly.
The test gas leakage detector always must be recalibrated.The test reference leakage device that this known use is had a leakage rate of determining.Be used for this purpose test reference leakage device and comprise that an accumulator unit and has the contraction position of known admittance.In order to calibrate leakage detector, will detect most advanced and sophisticated placing usually and shrink near the of position and adjust the leakage display value with a detection spray gun.Test or test reference leakage device by German open file 2702002,3243752 and 19963073 known this forms.
The test reference leakage device at first should have the constant air-flow of long-time (obviously being longer than a year) as far as possible.Secondly it must constitute enough little when in the housing of the leakage detector of it will being packed into.Its prerequisite is to be provided with the test gas that is under the high pressure (8 crust and higher) in the test reference leakage device.The test reference leakage device of this form is responsive to temperature.This is especially true when test gas is to flow under described pressure.Because reliability reasons does not allow to surpass the temperature of a maximum.This reason owing to the installation of such test reference leakage device in the leakage detector with the element that produces heat that operating equipment itself requires is inconvenient, usually is even impossible.
Under the situation that the test reference leakage device that utilizes an outside is calibrated, in leakage detector so far, must and handle " Leak Detection "/" air detection " via menu input beginning calibration.This is quite trouble and conception that do not meet the device of being convenient to operate.This is especially true to unbred personnel, and it must detect spray gun is checked the object that moves on travelling belt leakage with one.That they can not be engaged in the trouble brought because of operation and thereby time-consuming calibration process.
The objective of the invention is to, construct a kind of outside, promptly the test reference leakage device that separates with a leakage detector makes it can simplify the operation of leakage detector when implementing calibration.
Reach by the described feature of claim according to this purpose of the present invention.By these measures need only with detect the most advanced and sophisticated contraction position that place the test reference leakage device near, just can implement and test the calibration of the leakage detector that reference leakage device is installed separately.
Other advantage and details of the present invention will be illustrated by means of the embodiment that schematically illustrates among Fig. 1 to 3.Wherein:
Fig. 1 automatic deflation leakage detector comprises wherein mounted component;
Fig. 2 is according to the sectional view of an embodiment of the test reference leakage device of opening in a minute of the present invention; And
Fig. 3 one flow process block diagram.
Leakage detector 1 shown in Fig. 1 has a housing 2, and part of appliance wherein is set.What represent with square is for example a vacuum pump 3, a power unit 4, a gas detector 5 and a control device 6.Outside housing, be provided with the detection spray gun 7 that comprises its inspiratory point (tip) 8.Detect spray gun 7 and be connected in gas detector 5 via flexible pipe 9.Pack into for gas detector 5 and to detect situation in the spray gun 7, spray gun is connected with control device via signal conductor.Whole device features is all packed in the housing 2.2 of housings are provided with cooling air inlet 12 or ventilation slit 13 in the zone of bottom 11 with in the superincumbent zone.Because at least a portion of part of appliance produces heat, the cooling air stream by heat produced takes place.If this not enough, can add the fan that a support cooling air stream is set.
Fig. 2 illustrates an embodiment of test reference leakage device 14 of the present invention.It has a housing 15, wherein is provided with actual test reference leakage device 20, and the mode that the latter can not describe in detail is separately taken out.Test reference leakage device 20 has pipe adapter 21, and it leads to the outside by housing 15.Pipe adapter 21 is applicable at the contraction position and of the following test reference leakage device 20 that also will describe in detail to insert and forms common being connected of opening continuously between the suitable opening 22 that detects tip 8.This design can be carried out the calibration of leakage detector 1 at any time.
Test reference leakage device 20 has the pressure vessel that comprises accumulator unit 31 of an inside, relates to a kind of accumulator of commercialization here, and it comprises the test gas of desirable liquid form.Pressure in the such container that is full of is to depend on temperature strongly.Usually do not allow to surpass 8 crust (test pressure 12 crust).Such accumulator maximum temperature allowed to bear is limited in 50 ℃.
For make such pressure vessel temporary transient than the gas storage setting that also still can be used as under the high ambient temperature in the test reference leakage device, be provided with second external shell 32.It for example is formed from steel and by the pressure design that are much higher than 8 crust (or 12 crust).External shell 32 has the position 33 of contraction in the zone of an end face, it is designed to diaphragm 34.Shrinking the above-mentioned pipe adapter 21 of connection on the position 33.One lid 35 dismountable, that preferably can back out is set in the zone of other end.It can closely seal the housing 32 of removable lower cover.Between the opening of its end face and lid 35, be provided with an O-ring seal 36.Cover the inside that can touch housing 32 after 35 pulling down, to insert or to take out pressure vessel 31.
Housing 32 with the lid 35 opposing end faces the zone in be provided with one to projecting inward flange 37.This flange is at its side support diaphragm 34 towards pipe adapter 21.Insert pressure vessel 31 in the housing 32 at side support towards lid 35 flange 37.
In the embodiment shown in Figure 2, pressure vessel 31 is provided with a ball valve 38, and it is positioned at an end face of pressure vessel.Pressure vessel 31 inserts housing 32 like this, even valve 38 is towards lid 35.Lid 35 be provided with one with valve 38 corresponding bars 39, its length is chosen to make tightening fully and covers 35 o'clock valves 38 and open.If adopt the pressure vessel that does not have valve 38, then replace bar 39 that a punching pin is set, its sealing along with lid 35 provides an opening for pressure vessel 31.After cap seal closes, valve 38 or open, perhaps it has the opening that is formed by punching pin, thereby the test air is flowed in the housing 32.Conclusive for temperature load in this case no longer is pressure vessel 31 but housing 32.
Change pressure vessel 31 if desired, then from the housing 15 of test reference leakage device 14, take out test reference leakage device 20.Cover 35 and open housing 32 by backing out then.The edge of lid 35 is provided with aperture 40 near the side thereon.This realizes the inside of housing 32 and the pressure equilibrium between the environment before allowing in the end to back out and covering 35.
The special advantage of test reference leakage device of the present invention is, needn't change the housing 32 of compressive resistance.It can correspondingly satisfy desired requirement at it aspect stable.Only when carrying and support accumulator 31, must consider lower environment temperature.Shrink position (diaphragm 34) and itself also do not belong to disposable products.Therefore its advantage is, does not change test blow-by leakage rate when changing accumulator unit.
The test reference leakage device 20 of testing reference leakage device according to the present invention is provided with a sensor 42, and it can be discerned and when detect most advanced and sophisticated 8 and be in the pipe adapter 21.Sensor 42 can for example be tongue contact or similarly contact.Sensor constitutes grating in an illustrated embodiment.Pipe adapter 21 is provided with two openings positioned opposite to each other for this reason, for it disposes a light source 43 (for example light emitting diode) and a photosensitive member 44 (for example photodiode).
Must exist one to be connected between sensor 42 and leakage detector 1, it can send sensor signal to the control device 6 of leakage detector 1.Plug 46,47 shown in the figure on housing 2 or 15 and a stube cable 48.Particularly advantageous is to have wireless connections, transmitter in the test reference leakage device 14 that does not for example illustrate respectively and the receiver in the leakage detector 1.This connection can only utilize a plurality of leakage detectors of installing in different places of test reference leakage device calibration.
What conform with purpose especially is, test reference leakage device 20 is provided with a temperature sensor 51 near its contraction position, and send control device 6 to via the signal that is connected also temperature sensor 51 between test reference leakage device 20 and the leakage detector 1, this connection can be wireless connections or cable connection.This measure makes it can consider the contraction position and gas penetration potential temperature correlation of test reference leakage device 20 when calibration leakage display value.Particularly utilize diaphragm as the situation of the test reference leakage device of constriction under such consideration be important because the gas penetration potential of diaphragm is relevant with the temperature exponentially.In order to reach the reliable calibration of leakage detector, the temperature relation of test reference leakage device is recompensed by the calibration curve of storing in the software of equipment (control device 6) now.In the scope of test gas leakage, measure temperature.
What conform with purpose is that test reference leakage device 20 also is provided with an EEPROM except that temperature sensor 51.EEPROM schematically is shown among Fig. 2 and uses 52 marks.If in EEPROM, store date of manufacture, aeration quantity and slip, then can estimate container emptying thus, and therefore must change the moment of test reference leakage device 20.If EEPROM52 also is connected in control device 6, then this may be displayed in the display of leakage detector constantly.
Fig. 3 illustrates utilization, and (Fig. 3 a) and implement the FB(flow block) of calibration by means of test reference leakage device of the present invention (Fig. 3 b) by the equipment of prior art.Simplified calibration more as can be known according to the present invention by two FB(flow block).
Claims (15)
1. test reference leakage device (14), be used to have the automatic deflation leakage detector (1) of a detection most advanced and sophisticated (8) and a control device (6); Test reference leakage device (14) is provided with an accumulator unit (31) and and shrinks position (33), flows out the test gas flow rate that limits at least by the latter in calibration process; Test reference leakage device (14) is characterised in that, be provided with to discern in the zone of shrinking position (33) and detect most advanced and sophisticated approaching sensor (42), and it is provided with and is used for the device of sensor signal to control device (6) transmission of leakage detector.
2. according to the described device of claim 1, it is characterized in that transmitting device is designed to cable and connects (48).
3. according to the described device of claim 1, it is characterized in that transmitting device can be a wireless transmission, and comprise a transmitter at least in test reference leakage device (14) one sides.
4. according to one of claim 1 to 3 described device, it is characterized in that it shrinks position (33) is a diaphragm (34).
5. according to the described device of claim 1 to 4, it is characterized in that it has a temperature sensor (23).
6. according to one of claim 1 to 5 described device, it is characterized in that it is provided with a pipe adapter (21), this pipe adapter leads to the outside by housing (15), and has an opening (22) that is applicable to the inspiratory point (8) that inserts detection spray gun (7).
7. according to one of claim 1 to 6 described device, it is characterized in that accumulator unit is positioned at a pressure vessel (31), and be provided with one and hold the housing (32) of pressure vessel (31), and to shrink position (33) be the composition member of housing (32).
8. according to the described device of claim 7, it is characterized in that, pressure vessel (31) and housing (32) are columnar, contraction position (33) is positioned at the zone of one of both ends of the surface of housing (32), and housing (32) is provided with a lid removable, that preferably can back out (35) with the end face that contraction position (33) is oppositely arranged.
9. according to the described device of claim 8, it is characterized in that, housing (32) with the zone of the end face that is oppositely arranged of lid (35) in be provided with one to projecting inward flange (37), supporting thereon comprises the pressure vessel (31) of accumulator unit.
10. according to claim 8 or 9 described devices, it is characterized in that, pressure vessel (31) the lid (35) the zone in be provided with a ball valve (38), and the lid (35) have a bar (39), it opens valve (38) when screwing on lid (35).
11., it is characterized in that lid (35) has one and points to interior punching pin according to claim 8 or 9 described devices, it pierces through pressure vessel (31) when screwing on lid (35).
12., it is characterized in that the edge of lid (35) is provided with a hole (40) in the zone of side thereon according to claim 8,9,10 or 11 described devices.
13., it is characterized in that flange (37) supporting diaphragm (34) according to one of claim 9 and all the other claims described device.
14. according to one of an aforesaid right requirement described device, it is characterized in that it also is provided with an EEPROM, wherein store gaseous species, date of manufacture, aeration quantity and/or slip.
15., it is characterized in that the device that is used for the signal of transmission sensor (42) constitutes and makes it also be suitable for transmission by temperature sensor (51) and/or the signal that provided by EEPROM (52) according to claim 1,5 and/or 14 described devices.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10245044 | 2002-09-26 | ||
| DE10245044.7 | 2002-09-26 | ||
| DE10308687A DE10308687A1 (en) | 2002-09-26 | 2003-02-28 | Leak detection arrangement with a sniff tester has a sensor with the bottle neck of a test gas reservoir for detecting the approach of a sniff probe and transmitting a corresponding signal to the leak tester control unit |
| DE10308687.0 | 2003-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1685208A true CN1685208A (en) | 2005-10-19 |
| CN100526827C CN100526827C (en) | 2009-08-12 |
Family
ID=32094619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038226375A Expired - Lifetime CN100526827C (en) | 2002-09-26 | 2003-08-14 | Reference leakage device for leak snifter detector |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7168287B2 (en) |
| EP (1) | EP1543309B1 (en) |
| JP (1) | JP4567454B2 (en) |
| CN (1) | CN100526827C (en) |
| AU (1) | AU2003266980A1 (en) |
| DE (1) | DE50305135D1 (en) |
| WO (1) | WO2004034008A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101479588B (en) * | 2006-06-23 | 2012-06-13 | 因菲康有限公司 | Leak detector |
| CN108225972A (en) * | 2012-12-21 | 2018-06-29 | 安尼奥利亚公司 | For determining the device and method of the size of leakage hole in sample |
| CN108474713A (en) * | 2016-01-21 | 2018-08-31 | 普发真空公司 | Injection apparatus and leak detection module |
| CN112902026A (en) * | 2021-01-18 | 2021-06-04 | 南京信息工程大学 | Method for detecting natural gas leakage of natural gas automobile gas supply system |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10118085A1 (en) * | 2001-04-11 | 2002-10-17 | Inficon Gmbh | Leak finder for testing seals has test leak arranged below components such as vacuum pump and gas detector |
| DE202005011372U1 (en) * | 2005-07-20 | 2006-11-30 | Inficon Gmbh | Sniffing leak detector |
| DE102006016747A1 (en) * | 2006-04-10 | 2007-10-18 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Method and device for leak testing |
| US7594422B2 (en) * | 2006-10-30 | 2009-09-29 | Ge Homeland Protection, Inc. | Apparatus and method for calibrating a trace detection portal |
| US20090188296A1 (en) * | 2008-01-25 | 2009-07-30 | D Amico Sam | Method and apparatus for testing smoke and fire detectors |
| US20100326165A1 (en) * | 2009-06-25 | 2010-12-30 | Honeywell International Inc. | Detector test device |
| DE102013215278A1 (en) | 2013-08-02 | 2015-02-05 | Inficon Gmbh | Test leak device with integrated pressure sensor |
| US10175198B2 (en) * | 2016-02-16 | 2019-01-08 | Inficon, Inc. | System and method for optimal chemical analysis |
| EP3567356B1 (en) * | 2018-05-07 | 2021-02-24 | Inficon GmbH | Sniffing leak detector with switching valve and buffer chamber |
| CN112368576A (en) * | 2019-05-17 | 2021-02-12 | 开利公司 | Gas detector testing and calibration method and apparatus |
| CN110530687B (en) * | 2019-09-18 | 2022-04-29 | 国网山东省电力公司莱芜供电公司 | Gaseous detection device of SF6 |
| CN112179591A (en) * | 2020-09-16 | 2021-01-05 | 国网山东省电力公司济南市济阳区供电公司 | Intelligent detection vehicle for sulfur hexafluoride gas leakage of transformer substation |
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| FR1140947A (en) * | 1956-01-03 | 1957-08-21 | Chausson Usines Sa | Device usable in particular for the calibration of leak detection installations and similar applications |
| US2981091A (en) * | 1957-07-11 | 1961-04-25 | Gen Electric | Leak standard |
| FR1343219A (en) * | 1961-12-28 | 1963-11-15 | Thomson Houston Comp Francaise | Gas refractor leakage for leak detector |
| US3310974A (en) * | 1964-11-27 | 1967-03-28 | Automation Prod | Apparatus for calibrating a measuring apparatus |
| JPS58106741U (en) * | 1982-01-13 | 1983-07-20 | 東芝プラント建設株式会社 | Helium gas detector sensitivity check device |
| DE3243752A1 (en) * | 1982-11-26 | 1984-05-30 | Leybold-Heraeus GmbH, 5000 Köln | Test-leak device |
| JPS63109626U (en) * | 1987-01-05 | 1988-07-14 | ||
| US5353637A (en) * | 1992-06-09 | 1994-10-11 | Plumb Richard A | Methods and apparatus for borehole measurement of formation stress |
| JP3024388B2 (en) * | 1992-09-22 | 2000-03-21 | 横河電機株式会社 | Halogen gas leak detector |
| FR2749079B1 (en) * | 1996-05-22 | 1998-08-28 | Provencale D Automation Et De | APPARATUS FOR PRODUCING A CALIBRATED LEAK |
| JPH1137883A (en) * | 1997-07-23 | 1999-02-12 | Ishikawajima Harima Heavy Ind Co Ltd | Method for measuring leak amount |
| JPH11166698A (en) * | 1997-12-02 | 1999-06-22 | Nippon Air Liquide Kk | Gas leak detector |
| DE19846798A1 (en) | 1998-10-10 | 2000-04-13 | Leybold Vakuum Gmbh | Device for self-contained search gas leak indication; has pumps to generate vacuum, search gas detector and sniffer |
| DE19963073A1 (en) | 1999-12-24 | 2001-06-28 | Leybold Vakuum Gmbh | Leak tester for calibrating or testing leak rate devices, such as fixed inlets or relief jets, has twin outlets the flow rate through each of which can be measured and compared with a difference indication a malfunction |
| JP4717312B2 (en) * | 2000-02-29 | 2011-07-06 | ジェン−プローブ・インコーポレイテッド | Fluid transfer probe |
| GB2362217B (en) * | 2000-05-11 | 2004-07-07 | Zellweger Analytics Ltd | Gas sensor calibration system |
| DE10118085A1 (en) | 2001-04-11 | 2002-10-17 | Inficon Gmbh | Leak finder for testing seals has test leak arranged below components such as vacuum pump and gas detector |
| DE10122733A1 (en) | 2001-05-10 | 2002-11-14 | Inficon Gmbh | Test leak device |
-
2003
- 2003-08-14 DE DE50305135T patent/DE50305135D1/en not_active Expired - Lifetime
- 2003-08-14 EP EP03747897A patent/EP1543309B1/en not_active Expired - Lifetime
- 2003-08-14 AU AU2003266980A patent/AU2003266980A1/en not_active Abandoned
- 2003-08-14 JP JP2004542305A patent/JP4567454B2/en not_active Expired - Fee Related
- 2003-08-14 WO PCT/EP2003/009013 patent/WO2004034008A1/en active IP Right Grant
- 2003-08-14 US US10/527,905 patent/US7168287B2/en not_active Expired - Lifetime
- 2003-08-14 CN CNB038226375A patent/CN100526827C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101479588B (en) * | 2006-06-23 | 2012-06-13 | 因菲康有限公司 | Leak detector |
| CN108225972A (en) * | 2012-12-21 | 2018-06-29 | 安尼奥利亚公司 | For determining the device and method of the size of leakage hole in sample |
| CN108225972B (en) * | 2012-12-21 | 2021-04-09 | 安尼奥利亚公司 | Apparatus and method for determining the size of a leak in a sample |
| CN108474713A (en) * | 2016-01-21 | 2018-08-31 | 普发真空公司 | Injection apparatus and leak detection module |
| CN112902026A (en) * | 2021-01-18 | 2021-06-04 | 南京信息工程大学 | Method for detecting natural gas leakage of natural gas automobile gas supply system |
| CN112902026B (en) * | 2021-01-18 | 2022-03-11 | 南京信息工程大学 | Method for detecting natural gas leakage of natural gas automobile gas supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006500597A (en) | 2006-01-05 |
| DE50305135D1 (en) | 2006-11-02 |
| US7168287B2 (en) | 2007-01-30 |
| JP4567454B2 (en) | 2010-10-20 |
| EP1543309A1 (en) | 2005-06-22 |
| US20060150707A1 (en) | 2006-07-13 |
| WO2004034008A1 (en) | 2004-04-22 |
| CN100526827C (en) | 2009-08-12 |
| AU2003266980A1 (en) | 2004-05-04 |
| EP1543309B1 (en) | 2006-09-20 |
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Granted publication date: 20090812 |
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